Jacinta Jane, from Australia, was on the way to the hospital to be induced to give birth to her son Sammy who had passed away in the womb when she stopped to return the baby clothes she had bought.

"I wanted them returned now because I don’t want to see them or deal with them when I get home," she later said.

When Jacinta went to return the clothes, she was told she couldn't return them because she didn't have the bank card she had purchased them with with her.

She explained the situation to the sales assistant at the till, who told the manager what had happened and made the decision to over-ride the store policy.

The sales assistant, whose name was later revealed to be Jo, then asked Jacinta if she had a blanket to wrap him in, which she didn't.

Jo took Jacinta to the blanket section, helped her pick one out and let her cry on her shoulder.

When Jacinta went to pay, Jo refused and covered the cost of the blanket herself.

After the heartfelt gesture, Jacinta took to Facebook to write an open letter to Jo, telling her how much her kind actions meant to her.

Jacinta shared the post with Daily Mail Australia to raise awareness of stillbirth, and her message has since gone viral.

"This is an open letter to Jo, the beautiful lady who served me at Best and Less this morning," reads the letter.

"You didn’t know me. But I came in to Best and Less this morning, to return some special suits I bought for my baby I was carrying. I was told I couldn’t return them because I didn’t have the bank card with me that I used to purchase.

"And I broke down and explained I didn’t have it, and I was on my way to hospital to be induced to have my baby who had passed away, and I wanted them returned now because I don’t want to see them or deal with them when I get home.

"And in the split second that I said that, I seen the sincerity in your face. You got your manager to over ride that policy to give me my refund."

The letter continues: "You came and gave me a big hug and let me cry on your shoulder. You then took me to the blanket section and helped me pick out a blanket. Blue mink with white clouds on it.

"I don’t know you, and sadly I don’t even know your name. But I want you to know how thankful I am to have met you and thankful for what you did for me and my little Sammy.

"I just want you to know, it brought so much comfort cuddling his blanket through the contractions, and then wrapping him in it when he was born.

"And I’ll never EVER forget what you did for me and my baby. You truly are an angel and I thank you from the bottom of my heart!!"